[Resolved] sorting multidimensional arrays

[froth]

I have a set of arrays that looks like this:

$array[1][1]==int
$array[1][2]=="a string"
$array[1][3]=="a string"

$array[2][1]==int
$array[2][2]=="a string"
$array[2][3]=="a string"

$array[3][1]==int
$array[3][2]=="a string"
$array[3][3]=="a string"

$array[4][1]==int
$array[4][2]=="a string"
$array[4][3]=="a string"

$array[5][1]==int
$array[5][2]=="a string"
$array[5][3]=="a string"

and so on until the first dimension reaches 10000. I'm trying to sort $array by int so that $array[1][1] is greater than $array[2][1]. I don't want the strings compared at all; they must stay attached to their int. For example:

$array[1][1]==5052
$array[1][2]=="this is a string attached to 5052!"
$array[1][3]=="this is another string attached to 5052!"

$array[2][1]==1000
$array[2][2]=="this is a string attached to 1000!"
$array[2][3]=="this is another string attached to 1000!"

$array[3][1]==10500
$array[3][2]=="this is a string attached to 10500!"
$array[3][3]=="this is another string attached to 10500!"

$array[4][1]==2000
$array[4][2]=="this is a string attached to 2000!"
$array[4][3]=="this is another string attached to 2000!"

$array[5][1]==2101
$array[5][2]=="this is a string attached to 2101!"
$array[5][3]=="this is another string attached to 2101!"

would become...

$array[1][1]==10500
$array[1][2]=="this is a string attached to 10500!"
$array[1][3]=="this is another string attached to 10500!"

$array[2][1]==5052
$array[2][2]=="this is a string attached to 5052!"
$array[2][3]=="this is another string attached to 5052!"

$array[3][1]==2101
$array[3][2]=="this is a string attached to 2101!"
$array[3][3]=="this is another string attached to 2101!"

$array[4][1]==2000
$array[4][2]=="this is a string attached to 2000!"
$array[4][3]=="this is another string attached to 2000!"

$array[5][1]==1000
$array[5][2]=="this is a string attached to 1000!"
$array[5][3]=="this is another string attached to 1000!"

however I have no idea how to do this. I tried looking at array_multisort, but the article pretty much lost me. can anyone help?

[bradgrafelman]

Yeah, that manual page confused me too, so I wrote my own function.

This function ONLY works if the array is in the format you described; a numeric key followed by two strings of data.

function sort_multi_array(&$array) {

$newArray = array();
$array_num_list = array();

for($i = 0; $i < count($array); $i++) $array_num_list[] = $array[$i][0];

rsort($array_num_list, SORT_NUMERIC);

for($i = 0; $i < count($array_num_list); $i++) {
	for($x = 0; $x < count($array); $x++) {
		if($array[$x][0] == $array_num_list[$i]) $newArray[] = array($array[$x][0], $array[$x][1], $array[$x][2]); else continue;
	}
}

return $newArray;

}

$array = sort_multi_array($array); // EXAMPLE

print_r($array); // EXAMPLE 

If the $array is NOT always in this format, let me know and I'll try to adjust the function (OR you can try to adjust it yourself).

[froth]

Thanks a lot! 😃

[bradgrafelman]

No prob. This is what I do instead of sleep 😉

If you find that you have problems with that function, or have any questions about it, please PM me.

Since you've marked this thread "RESOLVED" I'll be unsubscribing from it. Glad I could help you out.